Home / 12,109.84-16,717.80-8,377.36

Finding the Fourth Proportional to 12,109.84, 16,717.80 and 8,377.36

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Solution

The fourth proportional to 12,109.84, 16,717.80 and 8,377.36 is: 11,565.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,109.84 : 16,717.80 = 8,377.36 : x
  2. Step 2: Convert to fraction form
    12,109.84/16,717.80 = 8,377.36/x
  3. Step 3: Cross multiply
    12,109.84x = 16,717.80 × 8,377.36
  4. Step 4: Simplify right side
    12,109.84x = 140,051,029.01
  5. Step 5: Solve for x
    x = 140,051,029.01/12,109.84
  6. Step 6: Final answer
    x = 11,565.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.